java 微信自定义菜单中文乱码问题

\uxxxx 怎么转换成中文

public static String decode(String unicodeStr) {  
        if (unicodeStr == null) {  
            return null;  
        }  
        StringBuffer retBuf = new StringBuffer();  
        int maxLoop = unicodeStr.length();  
        for (int i = 0; i < maxLoop; i++) {  
            if (unicodeStr.charAt(i) == '\\') {  
                if ((i < maxLoop - 5)  
                        && ((unicodeStr.charAt(i + 1) == 'u') || (unicodeStr  
                                .charAt(i + 1) == 'U')))  
                    try {  
                        retBuf.append((char) Integer.parseInt(  
                                unicodeStr.substring(i + 2, i + 6), 16));  
                        i += 5;  
                    } catch (NumberFormatException localNumberFormatException) {  
                        retBuf.append(unicodeStr.charAt(i));  
                    }  
                else  
                    retBuf.append(unicodeStr.charAt(i));  
            } else {  
                retBuf.append(unicodeStr.charAt(i));  
            }  
        }  
        return retBuf.toString();  
    }